Method of making dental-plate molds and dental plates



June 26, 1928.

R. w. HEATH METHOD OF MAKING DENTAL PLATELMOLDS AND DENTAL PLATES FiledJune 18, 1926 INVENTOR [2 W ital/i BY 2 1p d E I v ATTQRNEYS method b IPatented June 26, 1928.

UNITED STATES ROY w; BEA-TH, or xALAMAzoo, MICHIGAN.

METHOD OF MAKING DENTAL-PLATE MOI DDS AND DENTAL PLATES.

Application filed June 18,

The main object of this invention-is to provide an improved method ;ofmak ng dental plate ,molds and dental plates which is well adapted forroofless plates.

A further. ob'ect is to provide an improved method of maltin'g dentalplates which results in securing a'plate, which eflectively retains itsposition in the mouth and is comfortable for the wearer."

A further object is to provide an improved which dental plates may beproperly tted to the conditions of the individual.

Objects pertaining to details and economies of my improved process willdefinitely appear-from the detailed description to follow. The inventionis clearly defined and pointed out in the claims.

. The various steps of my improved process are clearly illustrated inthe accompanying drawing forming a part of this application, in which: 7

Fig. 1 is a top perspective view of a roofless dental plate made inaccordance with in improved method.

ig. 2 is a perspective view of an impression tray of standard type.

Fig. 3 is a perspective view illustrating the first step in preparingthe dental tray for taking the impression.

Fig. 4 is a perspective view of the tray asprepared in Fig. 3 with thecast or impression therein.

Fig. 5 is a perspective view of the cast removed from the tray.

Fig. 6 is a plan view of a chart of the diagnosis of the patients mouth.

' Fig. 7 is a cross sectional view of the cast or model as prepared formakinv the plate.

Fig. 8 is a perspective view s lowing the wax model as formed upon thecast.

It will be understood that'the drawings are mainly conventional and aredesigned to illustrate the "steps of my improved method.

In the practice of my improved method a dental tray 1 such as that shownin Fig. 2 is prepared for taking the impression by applying waxindicated at 2 to theflan es of the tray, the wax being molded to buildup the flanges and conform them to the interior cheek muscles at thebase of the gums. T also preferably build up therear of the tray at 3with wax to protect the soft palate.

1928. Serial m5. 116,880.

. With-the tra thus prepared an impression 4.0f plaster 0 Paris or othersuitable material is made in the usual manner, care being'taken,however, to take aclose impres- -s1on.

Either before or after taking this impression the mouth of'the patientis diagnosed thereon indicating mouth conditions.

The surface of the model is cut away as indicated in Figs. 5 and 7 to adegree correspondin to the degree of softness of the tissue; dial? is,little if any ofthe surface of the model is removed where the plate tobe formed is to be supported by a relatively hard tissue. The amountremoved 'varies, as stated, in proportion to the degree of softness ofthe tissue.

.With the model or cast formed in this way the plate may be formed bythe usual or any desirable methods. Experience has shown that theresulting plate is comfortable to the wearer and very effectivelymaintains osition or remains in position. aving thus described mylnvention what I claim as new and desire to secure by Let-- its tersPatent is:

1.. The method of preparing dental plates COIlSlStlllg Of applying waxto the flange of, an impression tray and conformin to degree of softnessof the corresponding plate supporting surface, and forming the plate 7from the, model thus prepared.

2. The method of preparing dental plates consisting of applying wax tothe flange of an impression tray and conforming to the interior cheekmuscles at the base of the gums, makin a plaster model in the tray thusproduce cutting away the surface of the model in varying degreescorresponding to the degree of softness of'the corresponding platesupporting surface, and forming the plate from the model thus prepared.

3. The method of preparing dental plates consisting of applying wax tothe flange of an impression tray and conforming to the interior cheekmuscles at the base of the gums, making a plaster model in the tray thusproduced, diagnosing the mouth of the patient to ascertain the relativehardness of tissue in the plate supporting surfaces thereof, cuttingaway the surface of the model in varying degrees corresponding to thedegree of softness of the corresponding plate supporting surface, andforming the plate from the mo'del'thus prepared.

4. Themethod of preparing dental plates consisting of making a model ofthe mouth, diagnosing'the mouth of the patient to'ascertain therelativehardness of tissue in the plate supporting surfaces thereof, cuttingaway the surface of the model in varying degrees corresponding to thedegree of softness of the corresponding plate supporting surface, andforming the plate from the model thus prepared.

In witness whereof I have hereunto set my hand.

ROY W. HEATH.

